Reed is not in Tuesday's lineup against the Angels, Brian McTaggart of MLB.com reports.
Reed has struggled during his first two career starts the past two days, going 0-for-8 with six strikeouts. Prior to being called up Saturday, Reed had been hitting .266/.345/.509 with 11 home runs and 36 RBI with Triple-A Fresno this year. In his place, the Astros will start Marwin Gonzalez at first base for Tuesday's game.